Updated ControlsTest to latest.
Added DataModel project.
Added AmbienceControlsHelper project.
Added Common Tools library.
Added missing projects to Ambience solution.

DataModel, AudioLibraryTest, AmbienceControlsHelper, Tools
Added a drawing buffer to the ScheduleView.
Refactored ProviderToken controls.
Small refactor of EventToken property.
Added Visitor pattern to EventProviders.
Added EventProvider editor controls with test.